Science Advances

Supplementary Materials

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  • Supplementary Text
  • fig. S1. 1H NMR spectra of five PPL-DOM time series samples collected at the SIO Pier.
  • fig. S2. Detection of compounds A and B in DOM (DOMA and DOMB) with structures identical to ReducedA and ReducedB.
  • fig. S3. 1H NMR spectra of PPL-extracted, water-soluble CDP produced from the photooxidation of BC in filtered seawater (blue) or Milli-Q (red).
  • fig. S4. Known BC degradation products identified in CDP via GC-MS.
  • fig. S5. Similar reduction products are observed in environmental PPL-DOM and PPL-extracted CDP.
  • fig. S6. Comparison of bulk PPL-DOM to terpenoid-rich PPL-DOM by 2D NMR.
  • fig. S7. 1H NMR spectra of PPL-DOM (red), terpenoid-rich PPL-DOM (green; retained on the second PPL column following acid hydrolysis; see text), and the sugar- and amino acid–rich fraction (blue; not retained by the second PPL column following acid hydrolysis).
  • fig. S8. Simulated HMBC NMR correlations for oxidized carotenoids.
  • table S1. Isotope and elemental data for PPL-DOM samples collected from the SIO Pier (32.87°N, 117.26°W).
  • scheme S1. A single-step reduction of diverse oxygen-containing functional groups to their corresponding alkane.

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